Means for controlling electric lifts, elevators, conveyers, &amp;c.



H. O. E. JAOOBY.

PATENTED AUG. 7, 1906.

MEANS FOR CONTROLLING ELECTRIC LIFTS, ELEVATORS, OONVEYERS, 5E0.

APPLICATION FILED DEO.15, 1905.

2 SHEETS-SHEET 1.

PATENTED AUG. 7, 1906.

' H. G. E. JAGOBY. MEANS FOR CONTROLLING E LEOTRIO LIFTS, ELEVATORS, GONVEYERS, 5w.

APPLICATION FILED DEO.15. 1905.

2 SHEETS-SHEET 2.

5... Lil? UNITED @TATES PATENT nennsr o. nreener, or nrinnow, ENGLAND. MEANS FOR CONTROLUNG ELEC-Tlilfi UFTS, ELEVATQRS, CONVEYERS. do.

fipecification offietters Patent.

Patented Aug. 7, 1906.

. Applicctionfiledileoember15,1905. Serialtlo. 291,368.

To all whom it may concern:

Be it known that l, vHnnrrr Cnrrnnns En- WARD JAO0BY,T6S1dHlg at 3 Gresham Terrace,

Butler Road, Harrow, in the county of Mid dlesex, England, have invented certain new and useful improvements in an improved means for controlling electric lifts, elevators, conveyors, or any similar contrivance having a moving car and stations; and I do hereby declare the following to he a ful clear, and

exact description of the invention, such-as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improved means of controlling electric lifts, elevators, conveyers, and the like whereby the cage or car is caused to travel to any desired station or iioor by pressing one oi the row of push-huttons in said cage or car. Similarly by pressing s push-button in eny station or floor the cage or car is caused to travel thereto, all interi erence being prevented when once the cage or car is storted.

The construction end operation of myinvention will he understood by reference 'to the drawings, which show its application to an electric lift.

Figure tie a front view. Fig. 2 is at side partsectional elevation. Fig. 3 is e plan of star-wheel end guidepost. Fig, i is e disgrammetic view of connections, 5 is a' diagram of suxiiisr resistance. I i

In the drawings, a is the cage, end?) one of the guide-posts. Upon the cage, journaled suitable loraclrets 0, is e shaft d, and lined to this sheit by e hey or the like is a star-wheel a, fitted with teeth or spurs Betweenthe teeth are pins 9, preferably fitted with rollers h. The teeth engage with projections or pins i, two of which ere employed for, each iioor as the lift moves. ihe object of the rollers is to lock the wheel c except when the teeth f arein engagement with. the pins i, the guide-post being suitably recessed, as at 1', to allow the rollers to clear end complete the required motion of the star -wheel es the roller engages with the full surface of the guide 0st. p In a suitable position on shaft dis keyed s chain sprocket-wheel Tc, which,-hy means of the chain 1, communicates motion to a corresponding sprocket-Wheel lc, keyed to the shaft d journaled in the sides of the case 'm.

Fixed to the shaft (1 are as many cams n n n n n as there are floors, these cams being keyed onto the shaft in different positions,

the cams losing so shaped as to raise the moving pieces oto 0 which in the drawings are shown built up in one piece with the magnetcores and pole-pieces as small roller (1 being employed to reduce t -e friction. Hinged at r or pivoted to the moving pieces 0 are armatures s s s s 8 carrying contacts 15 t i i t v in the form of s bridge-piece, the sprin s or being employed to keep the race oi the rollers o in contact with the cums n n 'c n n -lrlonnted upon each of the loroclrets o are two ClQCtYOIHfigDGtS ,w w, to being the holding megnet eoch case sndiov" the sttracting magnet.

a roller or wheel cc, which engages with the corresponding projection 53 wher the moving piece is raised or lowered by the action of the cam, its function being to impart an outward motion to the srmsture end contests The coirtsct-pieces to t bridge contects 2 to 2 when the m piece carrying armstore end co at is in the position shown in the drawings; but when t, e action, of the cam raises moving piece it Bridges z to z, the effect when 2 cor i d to 2 the l t descend when 2 is con the hit ascends.

'lhe sot jlg mechs i -n1, arrangement of or op ration .y invention will circuits, he reediiy undo So shown. in a drum or equivcie tor 2, er to 8, [11' drum, wh er 1, s over guide-puleys i and to the cage or in the shown or by sny other welllmown mehod.

I have shown tne attracting-'msgnets to so wound tlist the curret can pass through the whole o. a, portion of "'he wire thereon; but this not absolutely necesssry, the lower or holding magnets w haying two windings on each, which 1 dis in "uish as first and second windings, the tie of number 0? turns in first winding to the number of turns in the second winding varying in each magnet.

shows e i by a mounon said 5 snows diagrammatically the reversing switch, which is actuated by two electromagnets or solenoids 6 7 When the electromagnet f; is energized by the current, the reversing-switch gives current to the ermatureof to cause the he motor in such direction as it 7 is energized, the lift will lift to descend.

I I ascend. A. series of push-huttons (WP-6116:-

Upon each ermeture s t s a s ismounted o to. the die-- sing conducted seems ing upon the number of fioors in the case 3 and reduces the current therein. "W hen the shoWn there are iive-ere placed one on each push-button is released, the current follows floor. 9 represents gsteswitches for cutting f the circuit indicated by the full arrows only. off the current from the switch When the To moire the matter clearer, i will point gate on any iloor is open. Push-buttons I out that Whetever outside push-button is de- (see Fig. 2) are also fixed Within the cage and I pressed the current reaches the resistance 11, not by pressure on each armature s and cononly at e dirierentpoint, and thus divides in l I l tact t. a certain fixed ratio, which differs according Usually it would be necessary to employ as to the push-button depressed. and hence the 10 many Wires as there are push-buttons or circuit is practically the some for all outside 7 5 floors and o common return; and Where there push-buttons, and the selection or the conare only floors i rney do this, in which tacts t to 2 depends not upon e. separate ci'rcase the holding-magnets w are dispensed cuit being setup, but upon the current dividwith; but Where there are c large number of ing in e particular rstio. The ratio oi these floors I prefer to arrange the circuits as two currents Will he some as the ratio of shown, in which case i only require two Wires the number of turns in the first end second for any number of push-buttons and e comwindings on magnet and contact pieces corremon return w h also serves as it return for sponding to this floor. oico the two Windthe HlO'iLOI-S-Nl oh. I accomplish this as folings megnetize in oppositedirections, the two .,o lows: resistance ii is fixedon the third currents Wili neutrelize each other in the floor end is usually in the base of homing-magnet corresponding to the first the push-hutton The outer ends of this refloor, the Om er holdingnnegnets being sistsnce ere connected, respectively, to the magnetized. first and second v dings of the holding-megit will he seen if any other pushsbut- 25 nets. @ne end of the resistsnce is also con ton be depressed the current will divide st 0 nested to one contact of the pushhutton on the resistance 11 in the difi erent ratios scthefirst iioor. The other end is also concorded each push-button, hence will ne'c'tec to'one contest of the push+-hutton on niegnetize ell the holding-rnognets except the the second floor one contact of each push: one in which neutreiity exists, whi h corre- 0 button on the third, fourth, and fifth floors spends to the push+hutton pressed. The being connected to intermediate points in curr 'it nicer circule" round the holding; such resistsn'c- These points ere so chosen magi ets pass-es through the coils of the stthst the sections of resistance ii are in deiitreetnignugnets inu netizestheni, th erenite proportion to each magneto/inc ting w. by attracting their orrnet res, but only the 35 in rug. 4 .i have shown c diagrammatic armature corresponding to 1 ie push-button oo Vieiv which Will enable the circuit to be pressed is free to move, as oli the others are traced from. the positive rnsin through the tightlyheld by holdingrnagnetsi Hence pushhutton resistance to the negative Whenon push-button is pressed the armsrneiu. Suppose thet e push -hutton 8 on ture correspondingthereto .0 lower floor do Starting from the the attracting-magnet and positive pole, e current will follow the her .2 or .2, es course of the dotted arrows through resistcese under cons ence' push-button depressed, (lower one ton on first iloor is L i i on the drawings) to o'resistence 11. There endcontect correspondin. ereto rid s the current divides in theinenner described. her 2 to her e. Current is then given to port flowing through the resistsnce to end magnet 6 on reversing-switch which causes pert flowing directly to the coils w. The two the hit vcescend. As the lift posses the currents unite at the farther end of the floors the ster-Wheeis end come ere turned in, coilsw, and, following the course of the dotted the nienner described, one hen the hit 0 errows, circulate in the coils w, which are reaches the r-st floor the-corn it will cit-use the ZI each Wound to the some resistance, and moving piece 0 to rise end wheel at Wlli thence through the gate-switches 9 hook. to engage with the projecting -ece y, and throw the negative This divided current ecthe contest 2 into the or thereby cutting tustes in the nionner described the contact t. or? current from inegnet 6 end stopping the 5 Another circuit is now set up. Starting from lift. When there ere more than five floors 32o positive Inein, current flows in the direcor stations, it is sometimes convenient to srtion of the full srro-Ws through resists-nee R, rsnge en suxiliery resistonoe 11- (see Fig. 5) 1' net 6, which sctuetes the motonreversing to avoid multiplicity of tires.

d Uvfii'hQ/h, rollowine' iuii arrows to the contact t, Resistance it, Fig. t, is connected in the do reaches contsctore, and there jOHlS the coils rnsnner shown or may iDS"i in the re- 1? w, from whi h point the course of the curturn-Wire for he purpose 0' preventing in-- rent is the the dotted arrows through terference from outside when. once any pusi got-te stvitches to negative morn. lest button has loeen opereted. circuit, as indicated by the full arrows, shunts The notion is toilet-vs 2 When the it is at the first circuit (indicated by dotted arrows) rest, the full ootontinl on the pushhutton 3 i ergize circuit in series with the resistance R and has a value E (r X c). When'the lift is working,

magnet 6 or 7, as the case may be, and'the otential on the ush-button circuit will be r(c c), Whic is not suflicient to full enthe attracting magnets. ere E e uals electromotive force of supply, 1' equa s resistance of R, 0 equals current in push-button circuit, 0 equals current in magnet 6 or 7.

The star-wheel a may, if referred, be attached directly to or geare in any suitable manner to the shaft d.

Having thus described my invention, what I claim as new, and desire'to secure by Letters Patent, is- I 1. A star-wheel and a locking device arranged and adapted to engage the same and also to complete its motion, one of-these elements rising and falling with the elevator cage or platform, in combination with means for controlling the lifting and lowering of the ca e operated by said star-wheel substantia ly as set forth. 7

2. Inmeans for governing electrically-operated elevators, aseriesof differentiallywound' holding-magnets, operating-magnets and their armatures, and a resistance and conductors arranged and adapted to divide an electric current in different ratios for the purpose of operating at will any particular armature while leaving the others unaffected substantially as set forth.

3. In means for governing electrically-op erated elevators, a series of differentiallywound holding-magnets, operating-magnets the push-button circuit is shunted across the and their armatures, a resistance and conductors arranged and adapted to divide the current in different ratios for the purpose of operating at will any particular armature while leaving the others unaffected and two circuit-wires and their necessary connections for actuating the aforesaid electrical devices substantially as set forth.

4. In electrically-operated elevator mechanism, an armature provided with means for electromagnetically operating the said armature, a device carried-by said armature and a projection arranged and adapted to come in contact with said device for insuring throwoif substantially as set forth.

5. In elevator mechanism, the. combination of a star-wheel rising and falling with the elevator-cage, means for engaging and locking said wheel, cams operated by said wheel, electromagnets having cores movable individually by said cams, armatures hinged to said cores, contacts carried by'said armatures and circuits closed by said contacts which ment-of the cage substantially as set forth...

In witness whereof I have hereunto signed my name in the presence of -two subscribing witnesses.

HENRY C. E. JACOBY.

Witnesses: H. D. JAMEsoN, F. L. RAND.

thereby control the rising or falling move- 

